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path: root/webrtc/src/opcodes/Identify.ts
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import { WebSocket, CLOSECODES } from "@fosscord/gateway";
import { Payload } from "./index";
import { VoiceOPCodes, Session, User, Guild } from "@fosscord/util";
import { Server } from "../Server";

export interface IdentifyPayload extends Payload {
	d: {
		server_id: string,	//guild id
		session_id: string,	//gateway session
		streams: Array<{
			type: string,
			rid: string,	//number
			quality: number,
		}>,
		token: string,		//voice_states token
		user_id: string,
		video: boolean,
	};
}

export async function onIdentify(this: Server, socket: WebSocket, data: IdentifyPayload) {

	const session = await Session.findOneOrFail(
		{ session_id: data.d.session_id, },
		{
			where: { user_id: data.d.user_id },
			relations: ["user"]
		}
	);
	const user = session.user;
	const guild = await Guild.findOneOrFail({ id: data.d.server_id }, { relations: ["members"] });

	if (!guild.members.find(x => x.id === user.id))
		return socket.close(CLOSECODES.Invalid_intent);

	var transport = this.mediasoupTransports[0] || await this.mediasoupRouters[0].createWebRtcTransport({
		listenIps: [{ ip: "10.22.64.69" }],
		enableUdp: true,
		enableTcp: true,
		preferUdp: true,
		enableSctp: true,
	});

	socket.send(JSON.stringify({
		op: VoiceOPCodes.READY,
		d: {
			streams: [...data.d.streams.map(x => ({ ...x, rtx_ssrc: Math.floor(Math.random() * 10000), ssrc: Math.floor(Math.random() * 10000), active: false, }))],
			ssrc: Math.floor(Math.random() * 10000),
			ip: transport.iceCandidates[0].ip,
			port: transport.iceCandidates[0].port,
			modes: [
				"aead_aes256_gcm_rtpsize",
				"aead_aes256_gcm",
				"xsalsa20_poly1305_lite_rtpsize",
				"xsalsa20_poly1305_lite",
				"xsalsa20_poly1305_suffix",
				"xsalsa20_poly1305"
			],
			experiments: [
				"bwe_conservative_link_estimate",
				"bwe_remote_locus_client",
				"fixed_keyframe_interval"
			]
		},
	}));
}